Flight Delays

Jack Kim

2024-12-09

Overview of Project

Are departure delays significantly different between morning and evening flights?

Flight delays are vey common

nycflight2013 Data

Mornings: 5:00am ~ 11:00am

Evenings: 5:00pm ~ 11:00pm

Observed Difference in Mean Delay

Mean Departure Delay by Time of Day
Time of Day Mean Delay (minutes)
evening 22.729753
morning 3.492098
Observed Difference in Mean Delays (Evening - Morning): -19.23765 minutes

Permutation Test and Results

P-value: 0 

Conclusion

Observed difference is highly unlikely to have occurred by chance if the null hypothesis were true.

Strong evidence to reject null hypothesis: red line falls outside the range of the simulated null distribution values.

Potential generalization into other mega airports in US:

  • Chicago (ORD, MDW)
  • Los Angeles (LAX)
  • Atlanta (ATL)